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UMLE1 Review: Immunology
Review
48
Medical
Professional
06/16/2010

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Term
Major cells involved in innate immunity?
Definition
Monocytes, macrophages, neutrophils, NK cells
Term
Cells involved in cell mediated immune response? humoral immunity?
Definition
T lymphocytes
B lymphocytes
Term
Primary phagocytic cell in acute inflammation?
Definition
Neutrophil
Term
Type of cell necessary for transplant rejection?
Definition
T lymphocyte
Term
Which cells contain myeloperoxidase and lysozyme?
Definition
neutrophil
Term
Cell that is a major mediator of a type I hypersensitivity reaction?
Definition
mast cell
Term
Major mediator of the antiparasitic response?
Definition
eosinophil
Term
Which cells have granules containing histamine and heparin?
Definition
basophils and mast cells
Term
Major APC in tissues?
Definition
macrophages, dendritic cells, and B cells
Term
Which cells have a multilobed nucleus in Vit B12 or folate deficiency?
Definition
neutrophil
Term
Which cells secrete IL-1 to promote T cell activity?
Definition
Macrophages
Term
Which cells express IgE receptors on its cell membrane to mediate the allergic response?
Definition
basophil
Term
Which cells express high levels of MHC Class II on its cell membrane?
Definition
macrophage
Term
Which cell is a macrophage precursor?
Definition
monocyte
Term
Which cell type is increased in atopic asthma?
Definition
eosinophil
Term
Which cell recognizes antigen presented in the context of MHC Class II molecules?
Definition
T helper cells
Term
Antibody producing cell with abundant RER?
Definition
plasma cells
Term
Which cells are a major source of IL-2 production? major cells of the humoral immune response?
Definition
T helper cells (Th1)
B lymphocyte
Term
Name the type of Immunoglobulin (Ig):
1. most abundant type
2. able to fix complement
3. able to cross the placenta
4. responsible for long term immunity
Definition
1. IgG
2. IgG and IgM
3. IgG
4. IgG
Term
Name the type of Ig:
1. 1st class of Ig produced in an immune response upon exposure to an antigen?
2. found on the lining of mucous membranes and in secretions like breast milk and saliva?
3. type commonly occuring as a dimer?
4. type commonly occuring as a pentamer?
Definition
1. IgM
2. IgA
3. IgA
4. IgM
Term
Name the type of Ig:
1. elevated in patients with asthma and allergies?
2. causes mast cells and basophils to release histamine when triggered by Ag?
3. Type found embedded in the cell membrane of developing B cells?
4. total levels and concentration of this Ab can be estimated using a radioimmunosorbent test (RIST) and radioallergosorbent test (RAST)?
Definition
1. IgE
2. IgE
3. IgD
4. IgE
Term
What term is used to describe the portion of a molecule that serves as an antigenic determinant?
Definition
epitope
Term
What term is used to describe a small molecule that can serve as an antigenic determinant only if it is attached to a larger carrier molecule>
Definition
hapten
Term
What type of chemical bonds are critical in linking the heavy and light chains of Ig's?
Definition
disulfide bonds
Term
Which product results when papain digests an Ig?
Definition
Two Fab fragments capable of binging Ag and one Fc fragment
Term
Which products are produced following pepsin digestion of an Ig?
Definition
One F(ab')2 fragment and one Fc fragment
Term
What term is used to describe the region in an antibody that determines Ag specificity?
Definition
the hypervariable region or complementarity determining region (CDR)
Term
Name five mechanisms of antibody diversity?
Definition
1. mutations in the genes encoding the CDR region
2. random VJ recombination in light chains
3. random VDJ recombination in heavy chains
4. random assembly of light and heavy chains
5. imperfect recombination of VDJ genes
Term
Name the T lymphocyte cell surface protein associated with the following features:
1. Ag specific receptor on 95% of T cells
2. Ag specific receptor on 5 % or less of T cells
3. signal transduction protein always associated with TCR
4. T cell marker expressed in immature T cells
5. responds to MHC II class II molecule expressed by Ag presenting cells
Definition
1. alphaBeta T cell receptor (TCR)
2. gammaDelta T cells receptor
3. CD3
4. CD2
5. CD4
Term
Name the T lymphocyte cell surface protein associated with the following features:
1. responds to MHC class I molecules expressed on all cells
2. found specifically on T helper cells
3. found specificall on cytotoxic T cells
4. cells with this surface marker decrease in HIV/AIDS
5. type of T cells that destroys virally infected cells
Definition
1. CD8
2. CD4
3. CD8
4. CD4
5. CD8
Term
Name the HLA haplotypes associated with the following diseases:
1. ankylosing spondylitis
2. type I diabetes mellitus
3. multiple sclerosis
4. rheumatoid arthritis
5. screening for abacivar hypersensitivity
Definition
1. HLA-B27
2. HLA-DR3/DR4
3. HLA-DR2
4. HLA-DR4
5. HLA-B*5701
Term
Name the cytokine:
1. endogenous pyrogen
2. promotes IgA synthesis
3. induces Il2 production by T cells
4. high concentrations induce cells death in some tumors and cause cachexia
5. induces T and B cell activity during the intial stages of an immune response
Definition
1. IL-1 from macrophages
2. IL-5
3. IL-1
4. TNF-alpha
5. IL-1
Term
Name the cytokine:
1. induces production of IgE and IgG
2. induces differentiation of eosinophils and promotes growth of B cells
3. chemotactic factor for neutrophils
4. secreted by activated T cells and induces maturation of bone marrow stem cells
5. inhibits production of interferon gamma by T helper cells
6. inhibits production of IFN-y
Definition
1. IL-4 from T helper cells
2. IL-5 from T helper cells
3. IL-8 from monocytes and endothelial cells
4. IL-3
5. IL-10 from TH2 cells
6. Il-4
Term
Name the cytokine:
1. inhibits differentiation of Th1 cells
2. stimulates Th1 differentiation
3. activates T helper, cytotoxic T and NK and B cells
4. promotes production of IFN-y T helper cells
5. low concentrations promote neutrophil activity and IL-2 receptor expression
6. inhibits grwoth and function of T and B cells and promotes collagen secretion during tissue repair
Definition
1. IL-10
2. IL-12 from macrophages and B cells
3. IL-2 from T helper cells
4. IL-12
5. TNF-alpha
6. TGF-Beta
Term
Name the gel and Coombs Hypersensitivity reaction:
1. medaited by IgE bound to mast cells and basophils
2. antibody mediated cytotoxis reaction
3. occurs in response to environmental allergens
4. Ag-sensitized T cells release cytokines, which induce an inflammatory response up to 48 hours after initial contact with AG
Definition
1. Type 1
2. type 2
3. type 1
4. type 4
Term
Name the Gel and Coombs Hypersensitivity reaction:
1. assocaited with release of histamine, platelet activating factor, leukotrienes, prostaglandins, thromboxanes
2. binding of cytotoxic T cells or complement to Fc portion of antibody causes target cell lysis
3. immune complex deposition in tissues results in an immflammatory response
Definition
1. type 1
2. type 2
3. type 3 (immune complex reaction)
Term
What is a type ___ reaction?
1. type 1
2. type 2
3. type 3
4. type 4
Definition
1. immediate or anaphylactic
2. cytotoxic
3. immune complex
4. delayed type
Term
Name the type of hypersensitivity reaction responsible for the following disease/conditions:
1. arthus reaction
2. asthma
3. chronic transplant rejection
4. contact dermatitis, poison ivy rxn
5. drug allergies
6. environmental allergies
7. erythroblastosis fetalis
8. goodpasture syndrome
Definition
1. type 3
2. type 1
3. type 4
4. type 4
5. type 1
6. type 1
7. type 2
8. type 2
Term
Name the hypersensitivity reaction:
1. Graves disease
2. hemolytic anemia
3. immune complex-mediated glomerulonephritis
4. Lambert-eaton
5. myasthenia gravis
6. Multiple sclerosis
7. pernicious anemia
Definition
1. type 2
2. type 2
3. type 3
4. type 2
5. type 2
6. type 4
7. type 2
Term
Name the hypersensitivity reaction:
1. purified protein derivative (PPD)/tuberculin test
2. rheumatic fever
3. rheumatoid arthritis
4. systemic anaphylaxis
5. serum sickness
6. SLE
7. transfusion reaction due to ABO incompatibility
Definition
1. type 4
2. type 2
3. type 3
4. type 1
5. type 3
6. type 3
7. type 2
Term
which class of bacteria is particularly susceptible to complement mediated lysis?
Definition
gram - organisms
Term
which AB isotypes activate the classic pathways of complement?
Definition
IgG and IgM
Term
which molecules activate the alternative pathway of the complement cascade?
Definition
aggregated IgA, endotoxin, and other components of bacterial cell walls
Term
Name the components of the complement cascade responsible for:
1. neutralization of viruses
2. opsonization
3. neutrophil and macrophage chemotaxis
4. synthesis of the MAC
5. formation of C3 convertase
Definition
1. c1-C4
2. C3b
3. C5a
4. C5b to C9
5. C3b, Bb (alternative) or C4b, C2b (classic)
Term
Name the disease or condition cause dby a deficiency of:
1. c1 esterase inhibitor
2. C3
3. C5b-c9
4. decay accelarating factor (DAF)
Definition
1. hereditary angiodema
2. sinus and upper respiratory tract infections
3. recurrent Neisseria infections
4. paroxysmal nocturnal hemoglobinuria
Term
Name the type of transplant rejection:
1. preformed AB's in host react against graft Ag's
2. activation of previously sensitized T cells
3. involves T cell activation, differentiation and Ab production
4. immune complex deposition combined with subacute cell cytotoxicity
Definition
1. hyperacture rejection (minute-hours)
2. accelerated rejection (hours to days)
3. acute rejection (days-weeks)
4. chronic rejection (months-years)
Term
What are the 4 different classes of grafts?
Definition
1. autograft (self)
2. syngeneic (identical twin or clone)
3. allograft (same species)
4. xenograft (different species)
Term
The activity of cytotoxic T cells against:
1. virally or tumor inefected cells requires which cell surface receptor for Ag presentation?
2. against pathogens phagocytosed by macrophages requires which cell surface resceptor for Ag presentation?
Definition
1. MHC class I
2. MHC class II
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